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less: fix 'n'ext match: sometimes was going to 999999th line

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This commit is contained in:
Denis Vlasenko 2007-03-08 16:44:32 +00:00
parent 8a91081d9d
commit 5c1de36702
1 changed files with 19 additions and 10 deletions
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29
miscutils/less.c
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@ -342,6 +342,23 @@ static void status_print(void)
print_hilite(p); print_hilite(p);
} }
static void cap_cur_fline(int nlines)
{
int diff;
if (cur_fline < 0)
cur_fline = 0;
if (cur_fline + max_displayed_line > max_fline + TILDES) {
cur_fline -= nlines;
if (cur_fline < 0)
cur_fline = 0;
diff = max_fline - (cur_fline + max_displayed_line) + TILDES;
/* As the number of lines requested was too large, we just move
to the end of the file */
if (diff > 0)
cur_fline += diff;
}
}
static char controls[] = static char controls[] =
/* NUL: never encountered; TAB: not converted */ /* NUL: never encountered; TAB: not converted */
/**/"\x01\x02\x03\x04\x05\x06\x07\x08" "\x0a\x0b\x0c\x0d\x0e\x0f" /**/"\x01\x02\x03\x04\x05\x06\x07\x08" "\x0a\x0b\x0c\x0d\x0e\x0f"
@ -479,18 +496,9 @@ static void buffer_fill_and_print(void)
/* Move the buffer up and down in the file in order to scroll */ /* Move the buffer up and down in the file in order to scroll */
static void buffer_down(int nlines) static void buffer_down(int nlines)
{ {
int diff;
cur_fline += nlines; cur_fline += nlines;
read_lines(); read_lines();
cap_cur_fline(nlines);
if (cur_fline + max_displayed_line > max_fline + TILDES) {
cur_fline -= nlines;
diff = max_fline - (cur_fline + max_displayed_line) + TILDES;
/* As the number of lines requested was too large, we just move
to the end of the file */
if (diff > 0)
cur_fline += diff;
}
buffer_fill_and_print(); buffer_fill_and_print();
} }
@ -763,6 +771,7 @@ static void goto_match(int match)
if (match >= num_matches && eof_error > 0) { if (match >= num_matches && eof_error > 0) {
cur_fline = MAXLINES; /* look as far as needed */ cur_fline = MAXLINES; /* look as far as needed */
read_lines(); read_lines();
cap_cur_fline(cur_fline);
} }
if (num_matches) { if (num_matches) {
normalize_match_pos(match); normalize_match_pos(match);